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Learn how to make the best Peanut Brittle with just a few ingredients! Homemade Peanut Brittle is a sweet and salty treat that is perfect as a snack or to package up as a holiday gift.

Serve Homemade Peanut Brittle at holiday parties or bag it up in pretty holiday bags with Crockpot Candy, Homemade Hard Candy, and Crockpot Salted Caramel Fudge to give as gifts.

white plate of peanut brittle
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Why I Love This Peanut Brittle Recipe

I always loved peanut brittle as a kid. There was actually a peanut candy bar that was my favorite but I don’t think they sell it anymore. Luckily, it’s really easy to make at home with a little patience.

Don’t be intimidated by the candy thermometer. If you don’t have one, you can pick one up at just about any market or order one on Amazon. The important part is to make sure you just let the thermometer dip into the mixture and not touch the bottom of the pan. If it hits the bottom, it throws off the temperature and you won’t get an accurate reading.


  • Granulated sugar – Regular white sugar.
  • Light corn syrup – Light, not dark.
  • Water
  • Unsalted butter
  • Baking soda – This unusual ingredients reacts with the sugar, creating little air bubbles which help the candy break into pieces.
  • Roasted peanuts – This will be the only salty party of your brittle, so choose wisely (not the dry roasted kind).
overhead shot of peanut brittle on baking sheet

How to Make Peanut Brittle from Scratch

This candy is so easy to make, but it does require you to watch the temperature so don’t get distracted!

  1. Grab a baking sheet with sides (like a jelly roll pan) and cover it with foil.
  2. Stir together the sugar, corn syrup, and water. Bring the mixture to a boil and continue to boil until the temperature reaches 340 degrees F. It should be golden brown after about 15 minutes.
  3. Remove the pan from the heat and add butter and baking soda. It will bubble up (that’s the chemical reaction) so work quickly stirring with a silicone spatula until smooth.
  4. Pour in the peanuts and stir to evenly distribute. Quickly pour the mixture onto the lined baking pan and spray with nonstick cooking spray. Spread it evenly across the pan into a thin layer.
  5. Let the candy harden, at room temperature (about 30 minutes), and then break into pieces and store in an airtight container.
overhead shot of baking sheet with broken pieces of peanut brittle


What does Baking Soda do in Peanut Brittle?

Baking soda might seem like an odd addition to the peanut brittle. It’s added once the sugar mixture has cooked down and becomes acidic. The baking soda creates a chemical reaction causing little air bubbles to form. The candy becomes porous and brittle, making it easy to break into pieces.

Why is my peanut brittle too hard?

If your peanut brittle is too hard, there is likely a moisture issue. Either you didn’t cook all the water out of the sugar mixture or you didn’t store it in an airtight container. Humidity will affect the candy so make sure you store it properly.

How do you store peanut brittle?

Store in an airtight container at room temperature for 6-8 weeks.

stack of peanut brittle on a white plate

More holiday treats to Love


Peanut Brittle

4 from 4 votes
Learn how to make Peanut Brittle with a few ingredients! Homemade Peanut Brittle is sweet and salty and perfect for snacking and gifting.
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 55 minutes
Servings 10 servings


  • 2 cups granulated sugar
  • 1/2 cup light corn syrup
  • 1/2 cup water
  • 6 tablespoons unsalted butter cubed
  • 1/2 tsp baking soda
  • 1 1/2 cups roasted peanuts
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  • Line a lipped baking sheet with foil and spray with non-stick spray. Set aside.
  • To a medium saucepan, add the sugar, corn syrup, and water. Add in the candy thermometer to the pan making sure it touches the mixture but not the bottom of the pan. Bring the mixture to a boil over medium heat and then continue to boil until the mixture is golden brown and reaches 340 degrees. This should take about 15 minutes.
  • Remove the pan from the heat and quickly stir in the butter and baking soda until smooth. Then stir in the peanuts until evenly distributed.
  • Pour the mixture onto the prepared baking sheet and spread evenly with a silicone spoon, working quickly, as it will start to set.
  • Let harden at room temperature, about 30 minutes, and then break up into pieces.
  • Store in an airtight container.


Use a candy thermometer to make sure your sugar mixture reaches 340 degrees. Hook the thermometer to the side of the pan so it touches the mixture but not the bottom of the pan. 
Store in an airtight container. 


Serving: 1gCalories: 391kcalCarbohydrates: 57gProtein: 6gFat: 18gSaturated Fat: 6gCholesterol: 18mgSodium: 170mgPotassium: 170mgFiber: 2gSugar: 53gVitamin A: 213IUCalcium: 26mgIron: 1mg

Nutritional Disclaimer Kristin Maxwell of “Yellow Bliss Road” is not a dietician or nutritionist, and any nutritional information shared is an estimate. For accurate calorie counts and other nutritional values, we recommend running the ingredients through your preferred online nutritional calculator. Calories and other nutritional values can vary depending on which brands were used.

Melissa Williams

Melissa Williams is the creator of Persnickety Plates where she shares simple, family friendly recipes with everyday ingredients. She especially loves to bake and rarely meets a cookie she doesn’t like. This wife and mom of two girls aims to share recipes that are quick and easy because even though life is busy, there’s always time for good food.

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  1. Helen says:

    This recipe left a burn taste in me mouth 340 is to hot I think

  2. Debra Fjeld says:

    My Aunt Mabel said the KEY to peanut brittle is to always have FRESH SODA ! Always buy a new box!

    1. Kristin says:

      Awesome feedback Debra! Thanks for stopping by.